Donald Trump slams Rosie O’Donnell in first GOP debate

Within a few minutes of his first debate as a Republican presidential candidate, Trump refused to rule out a third-party run for the White House, ridiculed comedian Rosie O’Donnell and griped about his treatment by Fox News anchor Megyn Kelly.

It was an explosive start to the first GOP debate in a campaign season already upended by Trump, the unfiltered and brash real estate magnate. It was immediately apparent that classic Trump showed up to the debate — someone who pushes the boundaries in everything he does, including running for the White House.

Trump is smack in the center of the debate line-up tonight. The lower tier of presidential contenders had their brief moment in the sun earlier Thursday at a debate where Carly Fiorina delivered a memorable and polished performance.